fix the build break that introduced by eo syntax change.

src/lib/enventor_smart.c

@@ -751,7 +751,8 @@ EAPI Evas_Object *
 enventor_object_add(Evas_Object *parent)
 {
    EINA_SAFETY_ON_NULL_RETURN_VAL(parent, NULL);
-   Evas_Object *obj = eo_add(MY_CLASS, parent);
+   Evas_Object *obj;
+   eo_add(&obj, MY_CLASS, parent);
    return obj;
 }